... being the elder half-brother of General Albert Sidney Johnston, who was a son of Dr. John Johnston, of Salisbury, Conn., and Abigail Harris, his second wife. Dr. John Johnston was the third son of Captain Archibald Johnston , of Salisbury, Conn., a Revolutionary soldier, of Scotch descent, the family settling first in Duchess county, N. Y. He was a foremost man in his day and generation. Edward Harris, father of Colone...